PROJECTS

Recognizing feasible improvements without trial & error interruptions - bionic surface technologies makes it possible.
200
Projects
15
Clients

Yankee

In these drying cylinders, the formation and removal of condensate is an important design point, as the amount of condensate is crucial for optimum heat transfer. Despite the high demands placed on our engineers, our type of system analysis offers valuable insights and optimization options for the development of drying cylinders - without having to shut down the system and install expensive measuring equipment.
Schematische Darstellung eines Trocknungszylinders

Paper Analysis

Fluid permeability is a decisive factor in the usability of packaging papers in particular, as on the one hand contents should not leak out, but on the other hand air must pass through during many filling processes. Deeper insights into the internal paper structures and their relevance in fluid transport can provide valuable information for future developments in packaging paper development.

Perforated roller headbox

Turbulence, poor mixing or air inclusions in the headbox can be reasons for an inhomogeneous basis weight. The cause of such inhomogeneities can be efficiently tracked down using simulation - in addition to investigating possible optimization measures.
Zeigt die Strömungsgeschwindigkeit in der optimierten Zulaufleitung einer Papiermaschine

Stock Inlet Pipe

In order to achieve the most uniform fiber distribution possible downstream of a cross-flow distributor, the suspension should already have a uniform flow profile at the inlet. This is made more difficult by the manifold located directly upstream. There are two possible approaches: an analytical parameter study and an optimization algorithm.

Dry End Tail Cutter

CFD Simulation of the whole geometry in a pulp & paper machine for proper dust management. Calculation of the dust flow and impact of individual pipe flows, blow and suction devices.

Fourdrinier Headbox

Simulation of total headbox area with a mixture model of pulp and water. Comparison of different variations of the turbulence block to the vorticity behavior in the baseline scenario.

Thermal Deformation

Understanding thermal deformation in paper machinery to find the source of varying cutting quality. CFD simulation of the temperature distribution to identify critical components with high deformation.

Dust Extraction Pipe

Analysis of a new dust extraction pipe design. Simulating different shapes and openings for the pipe to optimize the geometry with a simplified domain.

Pulper

Evaluation of the mixing behavior in a pulper with different rotational speeds to assess optimal velocity for dissolving the pulp. Suggestion for a rotational speed for efficient pulp processing.

Dilution Control Unit

CFD simulation of the consistency distribution of pulp in a machine at a specific processing step. Examination of the influence of different local dilutions and allocation of inhomogeneities.

Wedge Zone Overflow

Transient multiphase CFD simulation for a machine's drainage zone. Determination of optimal design to minimize areas of problematic drainage through the wedge zone.

Overpressure Protection

Simulation of the mass flow through a heatbox and the connecting pipes to asses overpressure protection measures. Includes a model for steering valves to avoid high static pressure.

Yankee Dryer

Simulation of a yankee dryer with the water flow inside, the solids of the cylinder, and the air on the outside to investigate the temperature distribution as well as suggestions for optimized design.

Pressure Screen Rotor

Comparison of two different pressure screen rotor geometries with CFD simulation. Checking if the alternative generates improvement in terms of losses and screening quality.

Suction Press Roll

Investigation of the vacuum flow in a suction press roll to identify problems with the paper web. CFD simulation of different operating points, web and valve positions, and proposal to fix the problem.

Fourdrinier Headbox

Investigation of turbulence problems in the sieve with simulation of the total headbox area with a mixture model of pulp and water. Detection of the turbulence origin and correlation to the mixture ratio.

Air Reject Conveyor

Investigation of the volume flow distribution over the machine width and the separate chutes. CFD simulation of different geometries, evaluation of their impact as well as pressure loss optimization.

Pulp Container

Design and optimization of a new pulp container. Simulations for stirring and extraction conditions, and identification of target parameters. Design recommendations to achieve uniform mixing behavior.

Flat Suction Box

Investigation of the air release valve's impact on volume flow rate and pressure distribution in a flat suction box. CFD simulation to assess the valve in half-open and fully-open positions.

Fly Knife Cooling

Problem detection for the cooling system in a fly knife. Simulation of three different geometries to reduce pressure loss and optimization suggestions to increase the water flow rate for better cooling.

Vibration Analysis in Suction Box

Investigation of vibrations in a flat suction box. Modal analysis at three different water levels, determination of resonance frequency and potential exitation sources. Suggestions to reduce vibrations.

Base Weight Fluctuation

Simulation of an outlet box and turbulent tubes to understand the base weight fluctuation of a pulp mixture. High resolving turbulence modells were used to proposes geometrical changes for reduction of fluctuation.

Perforated Roller Headbox

Simulation of perforated headbox rolls with different hole diameters. Determination of the influence of rotation speeds and roll variants on the distribution of speed and vortex intensity at the outlet lip.

Pulp Dust Injection

Optimization of volume flow distribution in dust injection pipes of a pulper. CFD simulation to find the optimal pipe geometry.

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